bindings: Add support for nested union types

third_party/WebKit/Source/bindings/tests/results/core/XMLHttpRequestOrString.cpp

Index: third_party/WebKit/Source/bindings/tests/results/core/XMLHttpRequestOrString.cpp
diff --git a/third_party/WebKit/Source/bindings/tests/results/core/XMLHttpRequestOrString.cpp b/third_party/WebKit/Source/bindings/tests/results/core/XMLHttpRequestOrString.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..cb4aa5f4d0cf512a283f91cbafc812408c80e0f2
--- /dev/null
+++ b/third_party/WebKit/Source/bindings/tests/results/core/XMLHttpRequestOrString.cpp
@@ -0,0 +1,108 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// This file has been auto-generated by code_generator_v8.py.
+// DO NOT MODIFY!
+
+// This file has been generated from the Jinja2 template in
+// third_party/WebKit/Source/bindings/templates/union_container.cpp.tmpl
+
+// clang-format off
+#include "XMLHttpRequestOrString.h"
+
+#include "bindings/core/v8/ArrayBufferOrArrayBufferViewOrBlobOrDocumentOrStringOrFormDataOrURLSearchParams.h"
+#include "bindings/core/v8/IDLTypes.h"
+#include "bindings/core/v8/NativeValueTraitsImpl.h"
+#include "bindings/core/v8/ToV8.h"
+#include "bindings/core/v8/V8XMLHttpRequest.h"
+
+namespace blink {
+
+XMLHttpRequestOrString::XMLHttpRequestOrString() : m_type(SpecificTypeNone) {}
+
+String XMLHttpRequestOrString::getAsString() const {
+  DCHECK(isString());
+  return m_string;
+}
+
+void XMLHttpRequestOrString::setString(String value) {
+  DCHECK(isNull());
+  m_string = value;
+  m_type = SpecificTypeString;
+}
+
+XMLHttpRequestOrString XMLHttpRequestOrString::fromString(String value) {
+  XMLHttpRequestOrString container;
+  container.setString(value);
+  return container;
+}
+
+XMLHttpRequest* XMLHttpRequestOrString::getAsXMLHttpRequest() const {
+  DCHECK(isXMLHttpRequest());
+  return m_xmlHttpRequest;
+}
+
+void XMLHttpRequestOrString::setXMLHttpRequest(XMLHttpRequest* value) {
+  DCHECK(isNull());
+  m_xmlHttpRequest = value;
+  m_type = SpecificTypeXMLHttpRequest;
+}
+
+XMLHttpRequestOrString XMLHttpRequestOrString::fromXMLHttpRequest(XMLHttpRequest* value) {
+  XMLHttpRequestOrString container;
+  container.setXMLHttpRequest(value);
+  return container;
+}
+
+XMLHttpRequestOrString::XMLHttpRequestOrString(const XMLHttpRequestOrString&) = default;
+XMLHttpRequestOrString::~XMLHttpRequestOrString() = default;
+XMLHttpRequestOrString& XMLHttpRequestOrString::operator=(const XMLHttpRequestOrString&) = default;
+
+DEFINE_TRACE(XMLHttpRequestOrString) {
+  visitor->trace(m_xmlHttpRequest);
+}
+
+void V8XMLHttpRequestOrString::toImpl(v8::Isolate* isolate, v8::Local<v8::Value> v8Value, XMLHttpRequestOrString& impl, UnionTypeConversionMode conversionMode, ExceptionState& exceptionState) {
+  if (v8Value.IsEmpty())
+    return;
+
+  if (conversionMode == UnionTypeConversionMode::Nullable && isUndefinedOrNull(v8Value))
+    return;
+
+  if (V8XMLHttpRequest::hasInstance(v8Value, isolate)) {
+    XMLHttpRequest* cppValue = V8XMLHttpRequest::toImpl(v8::Local<v8::Object>::Cast(v8Value));
+    impl.setXMLHttpRequest(cppValue);
+    return;
+  }
+
+  {
+    V8StringResource<> cppValue = v8Value;
+    if (!cppValue.prepare(exceptionState))
+      return;
+    impl.setString(cppValue);
+    return;
+  }
+}
+
+v8::Local<v8::Value> ToV8(const XMLHttpRequestOrString& impl, v8::Local<v8::Object> creationContext, v8::Isolate* isolate) {
+  switch (impl.m_type) {
+    case XMLHttpRequestOrString::SpecificTypeNone:
+      return v8::Null(isolate);
+    case XMLHttpRequestOrString::SpecificTypeString:
+      return v8String(isolate, impl.getAsString());
+    case XMLHttpRequestOrString::SpecificTypeXMLHttpRequest:
+      return ToV8(impl.getAsXMLHttpRequest(), creationContext, isolate);
+    default:
+      NOTREACHED();
+  }
+  return v8::Local<v8::Value>();
+}
+
+XMLHttpRequestOrString NativeValueTraits<XMLHttpRequestOrString>::nativeValue(v8::Isolate* isolate, v8::Local<v8::Value> value, ExceptionState& exceptionState) {
+  XMLHttpRequestOrString impl;
+  V8XMLHttpRequestOrString::toImpl(isolate, value, impl, UnionTypeConversionMode::NotNullable, exceptionState);
+  return impl;
+}
+
+}  // namespace blink